(Information Center, 103', 1978, WA-13-01) at Grand Coulee Dam N. of Grand Coulee, Grant County, WA. WA155 N. 2.2 miles from jct with WA174 on the SW side of Grand Coulee to the bldg on the E. side of the road. (10-10-09, N47 57.627 W118 59.202) Photos by Bob & Dorothy Dunham.